Island



(No Model) E. S. WHITAKER & J. GHADWICK.

SPINNING AND TWISTING MACHINE SPINDLB.

Patented Nov. 9, 1897.

Fig. 2

- INVENZ'UEE. My?

UNITE STATES PATENT OFFICE.

EDMUND S. -WHITAKER AND JOHN OHADWICK, OF PROVIDENCE, RHODE ISLAND.

SPINNING AND TWISTING MACHINE SPINDLE.

SPECIFICATION forming part of Letters Patent N 0. 593,448, dated November 9, 1897.

Application filed November 6, 1896. Serial No. 611,210. (No model.)

To all whom it may concern:

Be it known that we, EDMUND S. WHITAKER au'd JOHN CHADWICK, of the'city of Providence, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Spinning and Twisting Machine Spindles; and we hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming part of this specification.

This invention has reference to an improvement in the bobbin-support for cap-spinning machines in which the spindle is stationary and the bobbin-support rotates around the spindle.

The invention consists in the peculiar and novel construction of the bobbin-support and drivingwhirl, whereby the same are supported by ball-bearings on a bolster secured to the reciprocating rail above and below the driving-band, as will be more fully set forth hereinafter.

In cap spinning machines as heretofore constructed the bobbin-supporting tube and the driving pulley or whirl have usually been constructed to rotate and bear on the deadspindle. As the bobbin has to be moved up and down to lay the yarn, the bobbin-tube, as well as the whirl, must therefore move up and down on the spindle, and it becomes difficult to secure the perfect lubrication of the bearing of the tube on the spindle without throwing some of the oil outward from the upper end of the tube as the bobbin'is moved upward.

The object of this invention is to secure the desired steadiness of the rotating bobbin without contact between the supporting-tube and the spindle.

Figure 1 is a side view of the improved bobbin-support for cap-spinning machines. Fig. 2 is a vertical sectional view of the same, indicating in broken lines one method for securing the bolster to the rail.

In the drawings, 3 indicates the dead-spindle, to the upper end of which the usual cap is secured; at, the reciprocating bolster-rail. The bolster 5 is provided with a wide base 6, of a diameter greater than the diameter of can be therefore adjusted on the bolster 5,

and when adjust-ed firmly secured by the lock-nut 9.

The bolster 5 is tubular and fits the spindle 3 with a loose sliding fit. The driving pulley or whirl 10 does not bear on the bolster 5, but is provided above and below the bandpull with cones and ball-bearings. At the lower end the cup 11, of larger diameter than the diameter of the base 6, extends over and surrounds the base. It is provided with the race-ring 13, which, with the race 7 and the series of balls 15, forms the lower bearing of the band-pulley 10, the upper end of which has the cup 12, of larger diameter than the band-pulley. The cup 12 is provided with the race-ring 14, which, with the race-disk 8 and the series of balls 15, forms the upper bearing of the band-pulley 10. To secure perfect steadiness, all the points of contact on the balls are made of greater diameter than the bearing-surface of the band-pulley or whirl.

The race-rings may be formed in the cups, but in practice we prefer to make them separate and force them into the cups. The upper part of the cup 12 is secured to the bobbin-base 16 preferably by screw-thread engagement. The base 16 is provided with the oil-inlet 17. from the base 16, to which it is secured, and the tube rotates with the base 16 and bandpulley 10. The bobbin rests on the base 16 and is supported by the tube 18 in the manner usual with cap-spinning machines. The interior of the tube 18 is not in contact with the spindle 3 and requires no lubrication. The bolster-tube 5 requires but little lubri- The tube 18 extends upward cation. No oil is lifted up by the upper end of the tube 18 and none is thrown off on the interior of the cap or on the bobbin.

Having thus described our invention, we claim as new and desire to secure by Letters Patent- 1. In a cap-spinning-machine spindle, the

combination with the dead-spindle, of a bolster-tube provided with a base adapted to be rigidly secured to thereciprocating rail, ballraces secured to and supported by the bolster-tube and its base, a band-pulley provided with enlargements above and below the band, ball bearings of larger diameter than the band-pulley, and a bobbin-support connected with the upper enlargement of the band-pulley unsupported by the spindle, whereby the bobbin is rotated and supported against lateral vibration, as described.

2. In a spindle for cap-spinning machines, the combination with the dead-spindle 3, the bolster-rail 4, and the bolster 5 in sliding contact with the spindle,of a bobbin-support consisting of the whirl 10,the enlarged ends 11 and 12 of the Whirl, ball-bearings within the enlarged ends of greater diameter than the whirl, the base 16 secured to the enlarged end 12, and the tube 18, the said bobbin-support revolving around the bolster-tube 5 and the deadlspindle 3 but not in contact with the same, whereby the bobbin is supported above the band-pull on bearings of larger diameter than on the bolster-rail and forming the base-sup- 7 port for the bolster-tube, the race 7 in the cup 6, and the race-disk 8 adj ustably secured to the bolster-tube forming the stationary races for the ball-bearings, and a bobbin-support consisting of the tube 18, the base 16, the driving-whirl 10, the enlarged ends 11 and 12, the races13 and 14, and the balls 15 15, said bobbin-support revolving but not in contact with the bolster-tube andspindle, whereby the bobbin is rotated and supported against lateral vibration, as described.

In witness whereof We have hereunto set our hands.

EDMUND S. WHITAKER. JOHN CHADWICK. WVitnesses:

JOSEPH A. MILLER, J r., M. F. BLIGH. 

